幫原po補上英文新聞來源兩個，以免被認為是不明來源。
一個是CBSsports（美國三大無線台底下的），一個是富比世。
https://www.cbssports.com/tennis/news/novak-djokovic-may-play-in-us-open-if-officials-waive-quarantine-period/
"According to a report from Spanish newspaper Marca, the No. 1 men's tennis
player in the world plans to play in the US Open in New York if tournament
officials agree to waive the quarantine requirement once he returns to
Europe. "
「根據西班牙報紙Marca，如果賽事官員同意免除他從美國返回歐洲的隔離規定，
那麼男子世界第一計畫要參加紐約舉行的美網。」
https://www.forbes.com/sites/adamzagoria/2020/07/15/novak-djokovic-practices-on-hard-courts-hints-he-will-play-us-open/#c607551739ef
"According to a report in Marca, Djokovic is willing to play the Open only if
officials agree to waive the quarantine requirement upon returning to Europe.
Djokovic is apparently hoping to play the French Open warm-up tournaments in
Madrid and Rome in the two weeks after the U.S. Open and before the French."
「根據Marca的一篇報導，Djokovic只在官員同意免除他從美國返回歐洲的隔離規定時，
才會願意參加美網。Djokovic顯然希望參加在馬德里和羅馬舉辦的法網熱身賽，這兩項
賽事是在美網後與法網前之間的兩週舉行。」
這兩篇都提到了西班牙文的報紙 Marca作為消息來源
我不識西班牙文，但連結如下
https://www.marca.com/tenis/2020/07/15/5f0ec154ca474113058b466b.html
從上下文看起來，Djokovic要求的可能不是美網的官員，而是歐洲賽事的官員，
因為提到的是從美國返歐以後的隔離要求。